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Norwesco
SKU: N-41735
Norwesco 1000 Gallon Plastic Multi-Use Underground Liquid Storage Tank
$2,559.75 -
Norwesco
SKU: N-41741
Norwesco 1250 Gallon Plastic One Compartment Septic Tank - IAPMO Certified
$2,648.99 -
Norwesco
SKU: N-43503
Norwesco 1250 Gallon Plastic Two Compartment Septic Tank with Loose Plumbing and Low Profile Design - IAPMO Certified
$2,661.73 -
Norwesco
SKU: N-43542
Norwesco 1250 Gallon Plastic Two Compartment Septic Tank with Loose Plumbing and Low Profile Design - IAPMO Certified
$2,681.13 -
Norwesco
SKU: N-43545
Norwesco 1250 Gallon Plastic Two Compartment Septic Tank with Loose Plumbing and Low Profile Design - IAPMO Certified
$2,681.13 -
Norwesco
SKU: N-43571
Norwesco 1250 Gallon Two Compartment Septic Tank with Loose Plumbing and Low Profile Design SI Version
$2,681.13 -
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Norwesco
SKU: N-44466
Norwesco 1250 Gallon Plastic Multi-Use Underground Liquid Storage Tank with Gaskets, Tees, and 1 Manhole Cover
$2,701.43 -
Norwesco
SKU: N-43502
Norwesco 1500 Gallon Plastic Preplumbed Two Compartment Septic Tank with Low Profile Design
MSRP: $3,078.00$2,706.55 -
Norwesco
SKU: N-43511
Norwesco 1250 Gallon Low Profile Two Compartment Septic Tank Loose Plumbing IAPMO Certified
$2,798.99 -
Norwesco
SKU: N-41744
Norwesco 1250 Gallon Plastic Two Compartment Septic Tank - IAPMO Certified
$2,798.99 -
Norwesco
SKU: N-41743
Norwesco 1250 Gallon Plastic Two Compartment Septic Tank with Adapters and 2 Manhole Covers - IAPMO Certified
$2,798.99
IAPMO Approved Septic Tanks
IAPMO Approved Septic Tanks — Comprehensive Catalog
The IAPMO Approved Septic Tanks catalog at OneSource Plastics includes every active manufacturer SKU across Norwesco, Snyder Industries, Chem-Tainer, Enduraplas, and Bushman — rotomolded polyethylene tanks built to ASTM D1998 specification with FDA 21 CFR 177.1520 resin compliance for food-contact applications. Use the sort and filter controls below to narrow by capacity, brand, or dimensions.
Applications
- Residential and small-commercial septic systems (single- and dual-compartment)
- Low-profile installation under driveways or high water tables (10"-18" cover)
- Holding-tank applications where municipal sewer is unavailable
- Aerobic treatment systems (ATU) and pump chambers
Compliance & Standards
All polyethylene tanks in this category are rotomolded from FDA 21 CFR 177.1520 compliant resin and manufactured to ASTM D1998 specification for upright polyethylene storage. UV stabilizers are co-extruded into the resin for outdoor installation. Maximum operating temperature 120°F for HDPE; higher for XLPE (cross-linked polyethylene). NSF 61 certified models available on request for potable drinking water applications — call to specify.
Freight & Delivery
Tanks ship LTL motor freight from the closest stocking warehouse to your delivery ZIP. Typical transit 5-10 business days. Liftgate available at delivery (per-shipment fee). Always inspect at delivery and note any damage on the bill of lading before signing — that is the LTL carrier claim trigger. Bulk-order consolidation reduces per-tank freight 25-40%. Same-business-day quotes: call 866-418-1777 with MPN, quantity, and delivery ZIP.
Sizing & Selection
Pick capacity first, then verify dimensions against your installation footprint. Most rotomolded tanks are built to OEM standard dimensions ± standard rotational-molding tolerance of ±2-3%. Vertical tanks need flat-pad foundation; horizontal/leg tanks need stand or cradle (check listing — some are sold with integrated stand, others require separate stand or band purchase). Application engineering: call 866-418-1777 for sizing, layout, and accessory recommendations.